RK Esiproof Manual Flexographic Proofing Coater
| Brand | RK |
|---|---|
| Origin | UK |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Esiproof |
| Pricing | Available Upon Request |
Overview
The RK Esiproof Manual Flexographic Proofing Coater is a precision-engineered benchtop instrument designed to replicate the ink transfer behavior of full-scale flexographic printing presses under controlled laboratory conditions. Operating on the principle of direct gravure-style metering—where ink is delivered via engraved ceramic anilox rollers and transferred to substrates under defined nip pressure and dwell time—the Esiproof enables repeatable, quantitative proofing for prepress validation, ink formulation development, and substrate compatibility testing. Unlike automated systems, its manual operation provides immediate tactile feedback and real-time adjustment capability, making it indispensable for rapid troubleshooting, QC verification, and collaborative R&D between ink suppliers, converters, and brand owners.
Key Features
- Manual, operator-controlled coating mechanism with calibrated hand-wheel drive ensuring consistent roller rotation speed and uniform nip engagement
- Selectively configurable anilox roll options: single-line or dual-line ceramic engraved rollers (standard line counts available per ISO 12647-6 specifications; custom engraving upon request)
- Adjustable anilox-to-substrate pressure via precision-machined micrometer gauge (range: 0–50 N, resolution ±0.5 N), enabling simulation of press-specific impression settings
- Compact footprint (W × D × H: 320 × 220 × 180 mm) and lightweight construction (<8 kg) for portability across lab, production floor, and client-side technical support visits
- Stainless-steel ink pan with integrated wiper blade and removable reservoir for solvent-based, water-based, and UV-curable inks
- Quick-change substrate holder accommodating sheets up to 250 × 350 mm, with edge clamping and lateral alignment guides for registration accuracy
Sample Compatibility & Compliance
The Esiproof supports a broad spectrum of print-relevant substrates—including uncoated and coated papers, corrugated board liners, flexible films (PET, OPP, PE), metallic foils, and nonwovens—without requiring thermal or vacuum fixation. Its mechanical design conforms to fundamental safety requirements outlined in EN 61000-6-2 (EMC immunity) and EN 61000-6-3 (EMC emission), though it operates without electrical power. As a manual proofing tool, it does not fall under CE machinery directive scope but is routinely deployed within GLP-compliant print labs where traceability of proofing parameters (anilox line count, applied pressure, ink viscosity, ambient RH/temperature) is maintained per internal SOPs aligned with ISO/IEC 17025 documentation practices.
Software & Data Management
The Esiproof is a purely mechanical system with no embedded electronics or digital interface. Consequently, it generates no native data streams or electronic records. However, its operational parameters are fully documentable using standardized lab notebooks or LIMS-integrated forms. Many users integrate the Esiproof into validated workflows governed by FDA 21 CFR Part 11 by pairing it with external digital tools: e.g., calibrated viscometers (for ink measurement), environmental loggers (for RH/T tracking), and digital calipers (for wet film thickness verification). RK provides a comprehensive Technical Protocol Pack—including parameter recording templates, calibration checklists, and ISO 12647-6 correlation guidelines—to support audit-ready documentation in regulated environments.
Applications
- Prepress evaluation of ink color fidelity, dot gain, and trapping performance across multiple substrate types
- Rapid screening of ink rheology effects on laydown uniformity and drying behavior
- Verification of anilox roll performance prior to press installation or after cleaning/reconditioning
- Root-cause analysis of press-related defects (e.g., mottling, scumming, streaking) through controlled variable isolation
- Training platform for press operators and technical service personnel on flexo fundamentals
- Supporting ASTM D724 (Surface Wettability), ISO 8791-4 (Pick Resistance), and TAPPI T 494 (Ink Absorption) test preparations
FAQ
Does the Esiproof require electricity or compressed air?
No—it is entirely manual and self-contained, relying solely on operator-applied force for roller rotation and ink transfer.
Can I use my own anilox rolls with the Esiproof?
Yes, provided they conform to the standard 25 mm diameter × 100 mm length specification and feature compatible shaft geometry (M6 threaded ends); RK offers retrofitting services for legacy rolls.
What is the typical repeatability of film thickness achieved?
Under controlled ambient conditions (23 °C ±1 °C, 50% RH ±5%), and using calibrated ink viscosity (measured per ISO 2555), wet film thickness repeatability is typically ±5% CV across ten consecutive runs with identical setup.
Is technical support available outside the UK?
Yes—RK maintains a global network of authorized distributors offering local calibration verification, operator training, and spare parts logistics, backed by remote engineering consultation.
